< 1 year old < 1 year old < 1 year old 1 to 9 years old 1 to 9 years old 1 to 9 years old ≥ 10 years old ≥ 10 years old ≥ 10 years old
Influenza (n=55) SARS-CoV2 (n=29) P-value Influenza (n=188) SARS-CoV2 (n=60) P-value Influenza (n=52) SARS-CoV2 (n=44) P-value
Male sex, n(%) 33 (60%) 11 (37.9%) 0.07 99 (52.7%) 40 (66.7%) 0.07 23 (44.2%) 23 (52.3%) 0.54
Comorbidities Cardiovascular Pulmonary Immune deficiency Kidney disease Cancer Congenital malformations 53 (96.4%) 27 (49.1%) 13 (23.6%) 4 (7.3%) 2 (3.6%) 2 (3.6%) 18 (32.7%) 24 (82.8%) 7 (24.1%) 3 (10.3%) 0 1 (3.4%) 0 0 0.045 0.04 0.24 0.29 1 0.54 <0.001 181 (96.3%) 29 (15.4%) 25 (13.3%) 59 (31.4%) 18 (9.6%) 58 (30.8%) 33 (17.5%) 48 (80%) 9 (15%) 2 (3.3%) 21 (35%) 5 (8.3%) 17 (28.3%) 6 (10%) <0.001 1 0.03 0.64 1 0.75 0.22 51 (98.1%) 1 4 (7.7%) 29 (55.8%) 9 (17.3%) 25 (48.1%) 1 (1.9%) 38 (86.4%) 1 (2.3%) 0 12 (27.3%) 6 (13.6%) 11 (25%) 4 (9.1%) 0.045 0.46 0.12 0.007 0.78 0.0 0.18
Nosocomial acquisition 28 (50.9%) 12 (41.4%) 0.49 49 (26.1%) 4 (6.7%) 0.001 14 (26.9%) 9 (20.4%) 0.48
Symptoms at diagnosis Asymptomatic Fever Cough Pharyngodinia Headache Laboured breathing Rhinorrhea Vomiting Diarrhea 2 (3.6%) 41 (74.5%) 35 (63.6%) NA NA 33 (60%) 21 (38.2%) 11 (20%) 8 (14.5%) 14 (48.3%) 7 (24.1%) 5 (17.2%) NA NA 8 (27.6%) 0 5 (17.2%) 0 <0.001 <0.001 <0.001 .. .. 0.006 <0.001 1 0.046 0 163 (86.7%) 150 (79.8%) 15 (8%) 13 (6.9%) 90 (47.9%) 107 (56.9%) 27 (14.4%) 21 (11.2%) 10 (16.7%) 39 (65%) 13 (21.7%) 0 3 (5%) 11 (18.3%) 4 (6.7%) 13 (21.7%) 13 (21.7%) <0.001 <0.001 <0.001 0.02 0.77 <0.001 <0.001 0.22 0.05 0 44 (84.6%) 37 (71.1%) 9 (17.6%) 11 (21.1%) 11 (21.1%) 29 (55.8%) 4 (7.7%) 2 (3.8) 6 (13.6%) 32 (72.7%) 13 (29.5%) 3 (6.8%) 8 (18.2%) 16 (36.4%) 2 (4.5%) 12 (27.3%) 5 (11.4%) 0.008 0.21 <0.001 0.13 0.8 0.11 <0.001 0.01 0.24
SaO2 <92% at hospital admission 21 (38.2%) 12 (41.2%) 0.82 55 (29.3%) 18 (30%) 1 11 (21.1%) 20 (45.4%) 0.016
Hypotension 9 (16.4%) 2 (6.9%) 0.32 22 (11.7%) 4 (6.8%) 0.34 11 (21.1%) 5 (11.9%) 0.28
Outcome PICU admission NIMV IMV HFOV PaO2/FiO2 index <100 Death 17 (30.9%) 24 (43.6%) 19 (34.5%) 4 (7.3%) 5 (9.1%) 7 (12.7%) 17 (58.6%) 3 (10.3%) 7 (24.1%) 2 (6.9%) 0 3 (10.3%) 0.02 0.003 0.46 1 0.16 1 28 (14.9%) 80 (42.5%) 37 (19.7%) 7 (3.7%) 8 (4.3%) 8 (4.3%) 12 (20%) 4 (6.7%) 8 (13.3%) 1 (1.7%) 0 4 (6.7%) 0.42 <0.001 0.34 0.68 0.12 0.49 10 (19.2%) 23 (44.2%) 11 (21.1%) 1 (1.9%) 5 (9.6%) 4 (7.7%) 16 (36.4%) 5 (11.4%) 12 (27.3%) 0 3 (6.8%) 3 (6.8%) 0.07 0.001 0.63 1 0.72 1